Grout



COATING 0R PLASTIC.

J. MURPHY.

GROUT No. 442,132. Patented Dec. 9, 1890.

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'N\ a\\\ Knew UNITED STATES PATENT OFFICE.

JOHN MI'RPHY, OF COLITMBI'S,'OIIIO.

GROUT.

SPECIFICATION forming part of Letters Patent No. 442,132, dated December 9, 1890.

Application filed September 8, 1890- Sen'al No. 364,383. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN MURPHY, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Grout,of which the t'ollowingis a specification.

My invention relates to the improvement I of grout,such as is adapted for an interstitial filling for brick or hard-burned block pavements.

The objects of my invention are to provide a grout of this class of such ingredients as to produce an indurate and adhesive compound,

to produce grout which, when applied as an 1 interstitial filling for brick or hard-burned block pavements, will operate to firmly unite i said bricks or blocks, form a durable filling therefor, protect the edges of the blocks from wearing or rounding, and provide, in connection therewith, a continuous and level surface.

In the accompanying drawings, Figure l is a transverse section of a street-pavement,

showing the use of my improved grout as a i filling therefor. Fig. 2 is a plan view of a number of paving blocks or bricks laid together and filled with said grout.

Similarlettcrsreferto similar-partsthroughout the several views.

My improved grout ccnsists of the following ingredients, combined about in the profifty per cent;

cent; inan ancse ten per cent. These ingredients are thoroughly mixed and reduced to a plastic orliquid mass,and the compound l thus attained is poured between the bricks or blocks mas shown at b. The indurating and 1 adhesive properties of the grout render it,

! when dry, an exceedingly hard mass, the wearing quality of which is approximately equal to the wearing quality of the paving material.

It will readily be seen that a grout of this 5' character will prevent the wearing away of l the edges of the said bricks or blocks, and

the consequent production of an uneven surface.

i am aware that tar and various compounds 5 fiorming a grout have been used for this pur- Jose; but the grout herein described differs 1 from thesein its composition. It is also evident that my improved grout is, when com.-

pared with tar and other similar substances, inexpensive.

What I claim, and desire to secure by Letters Patent, is-

' As an interstitial filling for brick or hardburned paving-blocks, a grout consisting of pulverized cinders, Portland cement, and manganese. con'ib'in'd imbout'fii propon time specified.

JOHN M URPI'I Y.

In presence of- (3. C. SHEPHERD, E. E. BRAGG. 

